ACT Prolite Flywheel Mazdaspeed3 2007-2013 / Mazdaspeed6 2006-2007

600520 is a Prolite flywheel, which is ACT's lighter flywheel offering with lowest inertia. Prolite flywheels are designed for best throttle response and acceleration. Prolite flywheels are preferred for road racing or rally racing, and have reduced drivability. Materials are properly distributed for maximum strength, good heat tolerance and rigidity. ACT flywheels are serviceable and can be resurfaced with no need to purchase additional parts. Flywheel Weight: 15.7 Flywheel Tooth Count: 112 Feel: Dramatically improved engine response and acceleration, mild to moderate gear rattle Recommendation: Recommended for race use Note: Must be used with ACT Pressure Plate and Disc